JPS5927805B2 - Drainage pipe drilling method - Google Patents

Description

[Detailed description of the invention] When inserting drainage pipes such as slope protection drainage pipes and irrigation water intake pipes, rock tethers,
The shape is such that the required drainage pipe is inserted after drilling with an auger, drilling machine, etc.

However, unconsolidated soil is a mixture of gravel, sand, clay, etc., and fault fracture zones where gravel and clay are mixed contain aqua regia, which causes the soil to flow out into the borehole. , it is difficult to insert the water drain pipe.

Therefore, in such geological conditions, gas pipes or steel pipes are inserted using a rotary drilling machine.
There is a concern that work costs and material costs will increase and work efficiency will decrease.

The present invention has been proposed in order to eliminate such defects.The present invention is a hollow pipe with a drainage hole bored in the outer peripheral wall, and a bit having an air blowing hole is installed at the front end of the hollow pipe, and a bit having an air blowing hole is installed at the rear end of the hollow pipe. The shank insertion portions of the drain pipe formed by connecting the shank insertion portions are removably fitted into a detachable shank mounted on a tether, and then the tether connects the drain pipe to its hollow part. A method for inserting a drainage pipe, which comprises: digging and penetrating into the ground to a predetermined depth while pumping air; and then removing the detachable shank from the drainage pipe to leave the drainage pipe underground. This is related to.

In the present invention, as described above, a hollow pipe with a drainage hole bored on its outer periphery has a water drain pipe to which a bit having an air blowing hole is connected to the front end, and a shank insertion part is connected to the rear end of the hollow pipe. the shank insertion part of the drain pipe is removably inserted into a detachable shank mounted on the tethering machine, the tethering machine is started, and the drain pipe is driven and rotated through the detachable shank; At the same time, the tip of the bit is used to dig into the ground, and at the same time, air is forced into the drainage pipe from the rock machine, and the same air is injected from the air injection hole provided in the bit to the outer periphery to remove excavated soil. This is to prevent any hindrance to the excavation of the drainage pipe.

When the drainage pipe is dug to a predetermined depth, the detachable shank is removed from the shank insertion part, and the drainage pipe remains in the desired location, and can be used as a drainage pipe for protection of slopes or for irrigation. It is used as an intake pipe.

According to the present invention, the insertion of a drainage pipe in a location with poor geology is carried out by the tethering machine at the same time as the drilling work by the tethering machine, which improves the excavation efficiency of the tethering machine. The present invention has many advantages, such as the ability to insert drain pipes into corresponding long holes.

The present invention will be described below with reference to the illustrated embodiments.

A is a hollow pipe 2 with many drainage holes 1 drilled in the outer peripheral wall.
B is a drain pipe formed by connecting a bit 4 with an air blowing hole 3 to the front end thereof and a polygonal cylindrical shank insertion part 5 to the rear end of the pipe. Shank insertion part 5. and a detachable shank having protruding polygonal cylinder parts 7 and 8 which are to be removably fitted into the shank insertion part of the coupling machine C, respectively.

In the present invention, the polygonal cylinder part 7 of the detachable shank B mounted on the coupling machine C is fitted into the shank insertion part 5 of the drain pipe A, and the drain pipe A is connected via the detachable shank B4. Connected to joint machine C, connected rock machine C
The drain pipe Ak is driven and rotated, and the tip bit 4 excavates the drain pipe A into the ground, and at the same time, air is force-fed from the coupling machine C and reversely injected through the air blowing hole 3 of the bit 4, After removing the excavated earth and sand, the drain pipe A is dug and penetrated to a predetermined depth, and then the drain pipe A is detached from the shank insertion part 5 of the drain pipe A.
B is extracted, and the water drain pipe A is left underground and used for the desired purpose.

Note that if the hole into which the drain pipe A is inserted is particularly rough, a hollow pipe D with a smaller diameter than the hollow pipe 2 is inserted in advance over the bit 4 and the hollow pipe 20 portion of the drain pipe A, and the drain pipe is removed. The work of digging and penetrating a drain pipe A is performed while preventing leakage of air from a hole 1 and roughening of the hole.

In this case, after the drain pipe A has been dug and penetrated to the required depth (see Figure 2), the pipe inserted into the drain pipe A is pulled out (see Figure 3), and the drain having the drainage hole 1 is removed. Pipe A is used as a slope protection drainage pipe or a water intake pipe.

(See Figure 4) Although the present invention has been described above with reference to embodiments, the present invention is of course not limited to such embodiments, and various modifications of the design can be made without departing from the spirit of the present invention. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is an exploded front view of parts used in the drainage pipe insertion method according to the present invention, and FIGS. 2 to 4 are process explanatory diagrams of an embodiment of the method of the present invention. A: Drain pipe, B: Detachable pipe, C: Connector, 1:
Drain hole, 2...Hollow pipe, 3...Air discharge hole, 4...Bit.

Claims (1)

[Claims] 1. The shank insertion part of a drain pipe is formed by combining a hollow pipe with a drainage hole bored in the outer circumferential wall, a billatra having an air blowing hole at the front end, and a shank insertion part at the rear end, It is removably fitted to a detachable shank mounted on a rock tether, and then the drainage pipe is forced into the ground to a predetermined depth by the rock tether while pumping air into the hollow part of the drain pipe. A method for inserting a drainage pipe, characterized in that the detachable pull shank is removed from the drainage pipe and the drainage pipe is left underground.